How to Stop Rain Spotting on Windows

Written by gryphon adams
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How to Stop Rain Spotting on Windows
Usually, rain spotting on windows comes from dirt rather than from the rain itself. (rain on window image by david hughes from

Rain spotting on windows detracts from the view and even gives the home's interior a dingy appearance. Keeping windows clean is a major job, and rain spotting adds a challenge. In areas with high mineral content in the water, the water spots may be as difficult to remove as hard water spots on plumbing fixtures. Professional window cleaners can provide solutions. If you prefer the do-it-yourself approach, work with an assistant and use a sturdy ladder for safety. Try a few basic fixes to reduce the rain spotting on the windows.

Skill level:

Things you need

  • Pressure washer (available for rent from hardware stores)
  • White vinegar
  • Long-handled squeegee
  • Rain dispersal product from an auto supply store
  • Window glass sealant (optional)

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  1. 1

    Pressure wash the house's siding. The cleaner the house is, the less dirt there is to get on the windows.

  2. 2

    Keep the windows clean. Wash them with a solution of 1 C. white vinegar to 1 gallon of warm water. Use a long-handled squeegee and wash the windows from the top down. Apply undiluted vinegar to stubborn spots. Rain tends to sheet off a clean window and will leave spots on a dirty or dusty window.

  3. 3

    Try a product designed to make rain run off of windows. Auto supply stores carry these products. Try it on one window to see if it solves the problem. Clean the window and then apply a thin layer of the product in even, downward strokes.

  4. 4

    Have the window glass sealed with a sealant, if needed. Home improvement stores carry these products.

Tips and warnings

  • It may be worth having a professional window cleaning company apply sealant, as they have the experience and equipment to do the job safely.
  • Keep the gutters cleared to prevent dirt and debris coming down on the windows in storms.

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